Combined fire grate capable of realizing complete bottom fire

The utility model relates to the technical field of a fire grate of a grate firing boiler, in particular to a combined fire grate capable of realizing complete bottom fire, and aims at solving the technical problems that in the grate firing boiler, the existing vertical reciprocating fire grate and a chain fire grate are directly combined into a fire grate structure, the complete bottom fire cannot be provided for fuel on the chain fire grate, and the burning efficiency of the boiler is influenced. The combined fire grate adopts the technical scheme that the combined fire grate capable of realizing the complete bottom fire is provided, the combined fire grate consists of the existing vertical reciprocating fire grate and the chain fire grate, wherein a fire seeder is arranged between the lower end of the vertical reciprocating fire grate and the front part of the chain fire grate, the fire seeder consists of a hollow shaft and back bending fire seeding fin pipe bars, one end of the hollow shaft is sealed and